Fix eeschema/eelayer.cpp and eeschema/eelayer.h so that they now compile OK

eeschema/eelayer.cpp

@@ -340,7 +340,12 @@ void WinEDA_SetColorsFrame::UpdateLayerSettings()
     }
 
     // Update whether grid is actually displayed or otherwise
-    m_Parent->m_Draw_Grid = g_ShowGrid = m_ShowGrid->GetValue();
+//  m_Parent->m_Draw_Grid = g_ShowGrid = m_ShowGrid->GetValue();
+    // The previous command compiles OK, but to prevent a warning
+    // from being generated when the Linux version is being compiled,
+    // the next two commands are provided instead.
+    g_ShowGrid = m_ShowGrid->GetValue();
+    m_Parent->m_Draw_Grid = g_ShowGrid;
 
     // Update color of background
     if( m_SelBgColor->GetSelection() == 0 )

eeschema/eelayer.h

@@ -6,7 +6,7 @@
 #define _EELAYER_H_
 
 #if defined(__GNUG__) && !defined(__APPLE__)
-#pragma interface "annotate_dialog.cpp"
+#pragma interface "eelayer.cpp"
 #endif
 
 #include "wx/statline.h"